This 2 kg (4.5lb) counterweight is designed for following iOptron mount: 

• CEM40/CEM40EC* (early version with 20mm CW shaft)
• iEQ30/iEQ30 Pro
• CEM26
• CEM25/CEM25P/CEM25EC
• ZEQ25
• AZ Mount Pro
• MiniTower Pro
• MiniTower II
• MiniTower

It can be used for other mount with a 20mm diameter counterweight shaft. 

* Check your CEM40/CEM40EC mount CW shaft diameter before ordering.

William Optics Vixen-Style 8 inch Dovetail Plate - Red

• Black anodized color matches color of WO mounting rings.
• Fits many mounts from WO (EZT), Vixen, Orion, Celestron, Synta, and others compatible with Vixen/Synta style dovetails
• Precision-machined out of solid aluminum, fully anodized for great looks, and life-long durability
• Light but sturdy; mount any scope on it easily

Two magnifiers in one. Interchangeable lenses and LED illumination. Magnification: 5/16x

Features:

• Interchangeable lenses of different magnification and diameter
• Illumination: LED lights (2 pcs.)
• Powered by standard AAA batteries
• Rubberized handle

GSO Dovetail Plate/Bar (แบบ Vixen V-series ทั่วไป) 220มม สีดำ

William Optics ZenithStar 61 II f/5.9 OTA with Cat Handle Bar - Red

• Latest 2nd Gen version! 
• 61mm f/5.9 doublet air-spaced objectives APO
• Use of synthetic fluorite FPL-53 glass material
• Very sharp image with excellent colour correction
• Precision optics with fully multi-coated lenses using super-high transmission (STM) coating on all surfaces
• Designed for astrophotography, wildlife photography & visual observation 
• Product of Taiwan. 2-year warranty

SVBONY SV106 Guide Scope 60mm with Helical Focuser

• 60mm finder achromatic refractor with helical focuser
• FMC (fully-multi-coated) coating enhances light transmittance and accurately track celestial body being photographed
• Designed for use with both guider CCD astronomy camera or eyepiece.
• Helical focuser collar will not rotate attached autoguider devices during focus adjustments.
• Can be used as a deluxe straight-through finder scope with optional 1.25" eyepieces installed (eyepieces sold separately)
• Back focus length: 220mm

ตัวแปลง SVBONY T-ring พร้อมเกลียว M48 T Threads สำหรับต่อกล้องถ่ายรูป Canon EF mount SLR DSLR

Sharpstar 3" Quadruplet 0.85x Reducer / Coma Corrector for f/3-f/6 Newtonian Reflectors 

Sharpstar 30085NTRD coma corrector can shorten the original focal ratio of f/4 to f/3.4, greatly shortening the exposure time. Besides, the Sharpstar 30085NTRD coma corrector is considerately designed with many threads. At the front of the corrector, there is M82×1 male thread for the connection to our 3" focuser. At the back of the corrector, there is tapped with M76×1 male thread, M68×1 female thread and M54×0.75 female thread, which can be used to thread on our M54 to M48 camera adapter ring. The back-focus is standard 55mm, starting from the M54 thread(camera end) to focal plane.

Svbony SV225 Mini Telescope Mount & SV225T Aluminium Tripod

SV225 MINI alt-az mount allows the telescope to move freely in two directions - altitude and azimuth. Altitude is the movement along the vertical axis and azimuth is the movement along the horizontal axis.

The advantage of an alt-az mount is that it's incredibly simple and easy to use. To move your telescope, you just turn the two knobs to adjust the altitude and azimuth angles. This makes it perfect for viewing objects in the night sky.

When buying an alt-az mount, there are several factors to consider. First, you'll want to make sure that the mount can support the weight of your telescope. Second, you'll want to look for a mount that has smooth tracking and accurate positioning for precise star gazing.